GNU bug report logs - #28242
Batch mode compiling: Error messages are displayed with "invalid character" glyph bounding symbols.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: acm <at> muc.de, 28242 <at> debbugs.gnu.org
Subject: bug#28242: Batch mode compiling: Error messages are displayed with "invalid character" glyph bounding symbols.
Date: Sun, 27 Aug 2017 20:53:32 +0300

> Cc: 28242 <at> debbugs.gnu.org
> From: Paul Eggert <eggert <at> cs.ucla.edu>
> Date: Sun, 27 Aug 2017 09:46:32 -0700
> 
> The ioctl needs a file descriptor, and which file 
> descriptor should Emacs try? Stdout? Stderr?

We are talking about messages in -batch, so stderr.

> What if the output of Emacs is 
> being sent to a file or pipe, and some other program later displays the text?

I don't think we should care.  The primary goal is to have batch-mode
messages to the screen display legibly.  If another program later
examines the results, it's a problem for that other program.  In
particular, if that other program is Emacs, we already have the
solution for displaying these quotes in interactive sessions.

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